Improved Mechanical Strength and Corrosion Resistance of Spark Plasma Sintered and ß-Transformed Ti-15Mo Alloy by Alloying with Zr and Fe
[EN] The present study investigated the use of spark-plasma sintering (SPS) to create Ti-15Mo (TM), Ti-15Mo-6Zr (TMZ), and Ti-15Mo-6Zr-2F (TMZF) alloys at 1100, 1150, and 1200 degrees C. SPS parameters and alloying elements Zr and Fe were also studied to determine how they affected sintered TM alloy...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/220783 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/220783 |
| Access Level: | acceso abierto |
| Palabra clave: | Corrosion resistance Iron Mechanical properties Spark plasma sintering Titanium alloy Zirconium |
| Sumario: | [EN] The present study investigated the use of spark-plasma sintering (SPS) to create Ti-15Mo (TM), Ti-15Mo-6Zr (TMZ), and Ti-15Mo-6Zr-2F (TMZF) alloys at 1100, 1150, and 1200 degrees C. SPS parameters and alloying elements Zr and Fe were also studied to determine how they affected sintered TM alloy structural, microstructural, and mechanical properties. XRD and EBSD studies showed that TM alloys primarily contained beta-Ti (bcc) phase and certain locations with alpha-Ti (hcp) phase laths. Incorporating Zr maintained the beta-phase, while adding Fe converted the alpha + beta into a single beta-Ti phase. Sintering at 1200 degrees C and alloying 6Zr and 2Fe increased TM alloy's bending strength by 4 times than CP-Ti. Maximum hardness and relative density of TMZF alloy were 477 +/- 8 HV and 98.57%, respectively. The TMZF alloy had excellent mechanical properties, including a low elastic modulus of 88 +/- 0.7 GPa and a maximum bending strength of 1067.66 MPa. Zr and Fe alloying improved Ti-15Mo alloy's corrosion resistance. Furthermore, the TMZ and TMZF alloys showed higher OCP, charge transfer resistance, corrosion potential, and lower corrosion current density than the TM alloy. Overall, the TMZF alloy exhibited good mechanical properties and corrosion resistance, making it a viable biomedical material. |
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